Particle acceleration

This article is about small-scale particle acceleration in acoustics. For acceleration of charged particles to very high energies, see particle accelerator.

In acoustics, particle acceleration is the acceleration (rate of change in speed and direction) of particles in a sound transmission medium. When sound passes through a medium it causes particle displacement[1] and as such causes changes in their acceleration.

The acceleration of the air particles of a plane sound wave is given by:

Symbol Units Meaning
a m/s2 particle acceleration
v m/s particle velocity
δ m, meters particle displacement
ω = 2πf radians/s angular frequency
f Hz, hertz frequency
p Pa, pascals sound pressure
Z N·s/m3 acoustic impedance
J W/m2 sound intensity
E W·s/m3 sound energy density
Pac W, watts sound power or acoustic power
A m2 area

See also

References

  1. ^ Arthur Schuster (1904). An Introduction to the Theory of Optics. London: Edward Arnold. An Introduction to the Theory of Optics By Arthur Schuster.{{cite book}}: CS1 maint: publisher location (link)
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